US6471441B1 - Shear-load chuck holder - Google Patents

Shear-load chuck holder Download PDF

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Publication number
US6471441B1
US6471441B1 US09/554,643 US55464300A US6471441B1 US 6471441 B1 US6471441 B1 US 6471441B1 US 55464300 A US55464300 A US 55464300A US 6471441 B1 US6471441 B1 US 6471441B1
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United States
Prior art keywords
shear load
strap
dowel
load dowel
mounting according
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/554,643
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English (en)
Inventor
Erich Müller
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Pecon AG
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Pecon AG
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Assigned to PECON AG reassignment PECON AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MULLER, ERICH
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/14—Dowel assembly ; Design or construction of reinforcements in the area of joints
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
    • E04B1/483—Shear dowels to be embedded in concrete

Definitions

  • This invention relates to a shear load dowel mounting for transmitting dynamic loads, having a shear load dowel, a shear load dowel bearing bush and at least one bearing housing holding the bearing bush and one holding the shear load dowel.
  • Shear load dowels are connection and compression distribution elements for two concrete parts running in the same plane, which are separated from one another by a gap.
  • a shear load dowel mounting which has a shear load dowel, a shear load dowel bearing bush and a bearing housing holding the bearing bush. Furthermore, on the bearing housing are arranged end plates which fix the shear load dowel bearing bush on a shuttering during the adjustment of the concrete slab.
  • the bearing housing has a multitude of closed loops of reinforcement steel wires. The loops lie in planes parallel to the direction of running of the gap.
  • EP-A-0 032 105 A system which with regard to the shear load dowel mounting may also bear up to dynamic loadings is shown in European Patent Reference EP-A-0 032 105.
  • the bearing housings are formed by bowls more or less closed on all sides. Within the bowl, although with this the allowable compression limit of the concrete is exceeded, the force transmission is effected onto the bowl and concrete running above the bowl is relieved so that the allowable compression limit is no longer exceeded.
  • EP-A-0 773 324 A further development is shown in European Patent Reference EP-A-0 773 324. Also here is the problem of the static loading and in particular the load distribution for not exceeding the allowable compression limit of the concrete which is taken into account.
  • an end plate directed towards the gap is provided, wherein on each end plate there is arranged a plate protruding into the construction body. This plate lies in each case on the side of the dowel or the bush, which with the transmission of the static reaction forces onto the corresponding component lies opposite the compression-loaded side of the dowel or the bush. It is suggested to provide these plates projecting into the construction body so that in an idle manner, on the oppositely lying side, in order to be sure that the element also withstands the static loadings when it is inadvertently installed the wrong way.
  • shear load dowels may be manufactured, which comprise a core reduced free of play and a casing which projects beyond the core and whose ends by way of plastic plugs are protected against corrosion.
  • shear load dowels preferably have relatively inexpensive constructional steel and only have a casing tube of stainless steel. Such shear load dowels have proven themselves extremely well for transmitting static loadings. They may also be precisely manufactured and are protected against corrosion.
  • this invention there are shear load dowel mountings on the market which allow for dynamic loadings.
  • shear load dowels As known from European Patent Reference 0 765 967, one has ascertained that in contrast to shear load dowels which have a single mono-ferrite steel, have shown considerably improved dynamic-physical properties. Based on this knowledge further trials with multi-layered shear load dowels have been carried out which all showed improved results over shear load dowels of mono-ferrite material. With this, mono-ferrite shear load dowels are understood as those rods which have a single steel alloy and do not have several layers of equal steel alloys or differing steel alloys.
  • the invention provides a method for manufacturing shear load dowels since in particular with more than two layers the method is not so suitable.
  • FIG. 1 a is a vertical longitudinal section taken perpendicular to a direction of the course of the gap
  • FIG. 1 b is a rear view of an end plate of the same shear load dowel mounting in which the shear load dowel bearing bush is held;
  • FIG. 1 c shows a cross section of the shear load dowel taken along the line A—A, as shown in FIG. 1 a;
  • FIG. 2 a shows the same view as FIG. 1 a, but of a second embodiment
  • FIG. 2 b shows the same view as FIG. 1 b of the embodiment according to FIG. 2 a;
  • FIG. 2 c shows a cross section taken through the shear load dowel shown in FIG. 2 a, along the line B—B;
  • FIG. 3 a shows another embodiment of a shear load dowel mounting as shown in FIG. 1 a;
  • FIG. 3 b shows a rear-side view as shown in FIG. 1 b but corresponding to the embodiment according to FIG. 3 a;
  • FIG. 3 c shows a section of the shear load dowel shown in FIG. 3 a, along the line C—C;
  • FIG. 4 a shows another embodiment of this invention as shown in FIG. 1 a;
  • FIG. 4 b shows a view as shown in FIG. 1 b but of the embodiment according to FIG. 4 a;
  • FIG. 4 c shows a cross section taken through the shear load dowel shown in FIG. 4 a, along line D—D.
  • FIG. 1 a shows the elements deposited in concrete.
  • the shear load dowel mounting includes the shear load dowel 1 , a shear load dowel bearing bush 2 as well as bearing housings 3 .
  • the bearing housings 3 have at least two elements, specifically an end plate 4 and a strap-like loop 5 .
  • the strap-like loop 5 with the end plate 4 together form a closed force system.
  • the end plate 4 is admitted in the concrete flush with the end surface of the respective concrete part B 1 , B 2 , which is directed towards the joint.
  • the strap-like loops are arranged so that they transmit the alternating loads occurring on the shear load dowel onto the end plate. This is achieved by the strap-like design of the loops 5 .
  • the strap-like loops 5 may be designed in various shaping forms. They may have the same width as the end plates 4 or be narrower or wider than the end plates 4 . In the embodiment according to FIG.
  • the strap-like loop 5 has the same width as the end plate 4 , while the remaining embodiments show the strap-like loops narrower than the end plate 4 .
  • the shear load dowel 1 and the shear load dowel bearing bush 2 may pass through the strap-like loop 5 , as shown by the embodiments according to the FIGS. 1 and 4, or they may be embraced by the loops 5 as shown by the embodiment according to FIG. 2 .
  • the loops 5 have strap-like functions, as shown in the embodiment according to FIG. 3 .
  • Each side has two straps which together form a closed force system with the end plate 4 .
  • At the upper end of the one end plate there engages a strap-like loop 5′ which extends up to below the shear load dowel bearing bush 2 .
  • the possible shapes of the strap-like loops 5 in a side view may for example be trapezoidal, wherein one preferably selects the shape of an equilateral trapezoidal with a height that may be different, as shown by the dashed line in the component B.
  • the shape of the strap-like loops 5 may be also roughly the shape of a triangle as shown in FIG. 2 a. This shape may also be achieved when the shear load dowel or the shear load dowel bearing bush in each case pass through the single strap-like loop 5 .
  • the strap-like loop 5 may also be shaped semicircularly as FIG. 4 a shows.
  • the strap-like loops 5 preferably have bleeding bores or bleeding holes 6 of any size and any number as is shown by the various embodiment forms.
  • shear load dowel 1 For the transmission of the dynamic loadings the multi-layered design of the shear load dowel 1 is required. Only with the multi-layered design of the shear load dowels can there be achieved the physical properties, specifically the demanded ability to be alternately loaded, paired with the high compressive strength, shear strength and elasticity values. Shear load dowels with a mono-ferrite cross section i.e. shear load dowels which in their entirety are of one metal or one metal alloy and of one piece have not mustered these desired pairings of the physical properties. Up to now multi-layered shear load dowels were used essentially for reasons of cost as well as for reasons of corrosion protection. With this laminar construction, the physical properties of the shear load dowel may be set such that shear load dowel mountings may be constructed, which are capable of transmitting the dynamic loadings.
  • shear load dowels according to this invention may also be manufactured multi-layered with all common known cross-sectional shapes.
  • the most common cross-sectional shapes such as cylindrical shear load dowels as well as shear load dowels with a rectangular or square cross section are possible.
  • a shear load dowel with a rectangular or square cross section principally may be formed of a layering of at least two plate-like rods, three or more layers are preferred. With this the outermost layer may also be formed as an embracing casing.
  • the connection between the plate-shaped rods to a shear load dowel may be of the most differing nature. Apart from adhesive and welding connections also connections with a positive and/or friction fit are also considered.
  • assemblies of plates may arise similar to multi-layered leaf springs, wherein the individual bearings for example may be connected to one another with a positive fit by rivets or pins interspersing them, or comprise lateral recesses for a connection by way of a hooping.
  • shear load dowels With the cylindrical embodiment forms of the shear load dowels, likewise two or multi-layered designs are considered. With this the diameter ratios depending on the choice of material combination plays a suitable part. The design can depend on the forces and movements to be expected. Dynamic loadings on shear load dowel mountings indeed occur in very varied applications from shear load dowels which connect road concrete slabs and ground plates in multi-story carparks to complex concrete designs, such as tunnel pipes or concrete channels. In all these applications there may be alternating loads occurring faster or slower which may only be adequately accommodated with shear load dowel mountings designed for dynamic loadings.
  • one cylindrically formed shear load dowel may be manufactured of more than two layers.
  • the method known from European Patent Reference 0 765 967 is not so suitable.
  • a first tube which surrounds this rod with a certain play and then its diameter by way of a hammering method is hammered onto the core completely free of play.
  • An extremely exact rod may be achieved, wherein the friction connection is excellent.
  • a further tube may be pulled over the two-layered core formed in this manner, again with play, wherein again by way of a hammering method the new outermost casing may be hammered onto the already two-layered core.
  • there may be formed a rod of any number of layers which has enormous strengths and physical properties that may be tailored to suit any application.
  • the core of the shear load dowel is a rod.
  • the core is an innermost tube and several tubes in several layers are pulled thereover and are hammered.
  • the hollow space of the innermost tube for physical reasons or as a corrosion protection may be filled out with a curing mass.
  • the core may be a rod or a single or multi-layered tube.

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  • Architecture (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Hydraulic Turbines (AREA)
  • Road Paving Structures (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Gripping On Spindles (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Battery Electrode And Active Subsutance (AREA)
US09/554,643 1997-11-17 1998-11-16 Shear-load chuck holder Expired - Fee Related US6471441B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH02648/97A CH692991A5 (de) 1997-11-17 1997-11-17 Querkraftdornlagerung.
CH2648/97 1997-11-17
PCT/CH1998/000493 WO1999025934A1 (fr) 1997-11-17 1998-11-16 Support de mandrin a force de cisaillement

Publications (1)

Publication Number Publication Date
US6471441B1 true US6471441B1 (en) 2002-10-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
US09/554,643 Expired - Fee Related US6471441B1 (en) 1997-11-17 1998-11-16 Shear-load chuck holder

Country Status (8)

Country Link
US (1) US6471441B1 (fr)
EP (1) EP1032737B1 (fr)
JP (1) JP2001523778A (fr)
AT (1) ATE299974T1 (fr)
AU (1) AU1018999A (fr)
CH (1) CH692991A5 (fr)
DE (1) DE59812946D1 (fr)
WO (1) WO1999025934A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030190190A1 (en) * 2000-09-29 2003-10-09 Mclean Peter Charles Articulated concrete joint member
US20050232697A1 (en) * 2004-08-05 2005-10-20 Mark Brinkman Dowel apparatus and method
US20050276660A1 (en) * 2000-09-29 2005-12-15 Mclean Peter C Pavement joint
US20060177269A1 (en) * 2005-02-10 2006-08-10 Kramer Donald R Concrete slab dowel system and method for making and using same
US20080014018A1 (en) * 2006-07-13 2008-01-17 Russell Boxall Rectangular Load Plate
US20080236091A1 (en) * 2001-09-13 2008-10-02 Russell Boxall Tapered load plate for transferring loads between cast-in-place slabs
US20100242401A1 (en) * 2001-09-13 2010-09-30 Russell Boxall Tapered Load Plate for Transferring Loads Between Cast-In-Place Slabs
US8627626B2 (en) 2010-04-21 2014-01-14 Russell Boxall Transferring loads across joints in concrete slabs
US8840336B2 (en) 2011-11-08 2014-09-23 Fort Miller Co., Inc. Removable dowel connector and system and method of installing and removing the same
US10077551B2 (en) 2015-10-05 2018-09-18 Illinois Tool Works Inc. Joint edge assembly and method for forming joint in offset position
US10119281B2 (en) 2016-05-09 2018-11-06 Illinois Tool Works Inc. Joint edge assembly and formwork for forming a joint, and method for forming a joint
US11136731B2 (en) * 2019-11-14 2021-10-05 David R. Poole Integrated form for embedding a waterstop in a keyed concrete joint
US11149385B1 (en) * 2020-05-20 2021-10-19 McTech Group Inc. Dowel baskets and jackets with interchangeable dowels
US20220316210A1 (en) * 2019-08-05 2022-10-06 Hickory Design Pty Ltd Precast building panel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU743592B3 (en) * 2000-08-08 2002-01-31 Danley Construction Products Pty Ltd Plate dowell assembly
DE102008033585B4 (de) * 2008-07-17 2010-04-29 Bs Ingenieure Ag Schubdornverbindung
CN107059531A (zh) * 2016-11-30 2017-08-18 北京中景橙石科技股份有限公司 一种抗沉降透水地面及其铺设方法

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2194718A (en) * 1938-06-25 1940-03-26 Older Clifford Concrete road joint
US2323026A (en) * 1938-12-02 1943-06-29 Henry A Taubensee Roadway formation unit
US2572552A (en) * 1946-08-21 1951-10-23 Donald E Willard Load transfer device
US2608141A (en) * 1947-04-26 1952-08-26 James H Jacobson Load transfer device for concrete pavements
US2654297A (en) * 1949-02-18 1953-10-06 Felix L Nettleton Expansion dowel
US4091589A (en) * 1976-01-08 1978-05-30 S.I.P., S.P.R.L. Element for building contraction or expansion joints and composite unit obtained with this element
US4578916A (en) * 1983-03-16 1986-04-01 Peter Fankhauser Connecting and pressure-distributing element for concrete structural members
EP0032105B1 (fr) 1980-01-04 1987-05-20 Ulisse C. Aschwanden Broche et douille pour la liaison d'éléments de construction en génie civil
US4883385A (en) * 1988-04-15 1989-11-28 Dayton Superior Corporation Load transfer assembly
US5005331A (en) * 1990-04-10 1991-04-09 Shaw Ronald D Concrete dowel placement sleeves
US5216862A (en) * 1988-10-27 1993-06-08 Shaw Ronald D Concrete dowel placement sleeves
EP0765967A1 (fr) 1995-09-29 1997-04-02 Pecon AG Procédé de fabrication d'un boulon de force transversale et boulon fabriqué par ce procédé
EP0773324A1 (fr) 1995-11-07 1997-05-14 F.J. Aschwanden AG Dispositif pour la connection et la transmission des forces transversales entre deux structures séparées par un joint
US5797231A (en) * 1996-01-16 1998-08-25 Kramer; Donald R. Concrete slab dowel system and method for making same
US5911538A (en) * 1996-06-19 1999-06-15 Pecon Ag Transverse force rod bearing
US6145262A (en) * 1998-11-12 2000-11-14 Expando-Lok, Inc. Dowel bar sleeve system and method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0545854T3 (da) * 1991-11-29 1996-02-12 Toni H Erb Forskydningsdornforbindelse
DE29620637U1 (de) * 1996-02-28 1997-02-20 Pecon Ag Querkraftdornverankerung

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2194718A (en) * 1938-06-25 1940-03-26 Older Clifford Concrete road joint
US2323026A (en) * 1938-12-02 1943-06-29 Henry A Taubensee Roadway formation unit
US2572552A (en) * 1946-08-21 1951-10-23 Donald E Willard Load transfer device
US2608141A (en) * 1947-04-26 1952-08-26 James H Jacobson Load transfer device for concrete pavements
US2654297A (en) * 1949-02-18 1953-10-06 Felix L Nettleton Expansion dowel
US4091589A (en) * 1976-01-08 1978-05-30 S.I.P., S.P.R.L. Element for building contraction or expansion joints and composite unit obtained with this element
EP0032105B1 (fr) 1980-01-04 1987-05-20 Ulisse C. Aschwanden Broche et douille pour la liaison d'éléments de construction en génie civil
US4578916A (en) * 1983-03-16 1986-04-01 Peter Fankhauser Connecting and pressure-distributing element for concrete structural members
US4883385A (en) * 1988-04-15 1989-11-28 Dayton Superior Corporation Load transfer assembly
US5216862A (en) * 1988-10-27 1993-06-08 Shaw Ronald D Concrete dowel placement sleeves
US5005331A (en) * 1990-04-10 1991-04-09 Shaw Ronald D Concrete dowel placement sleeves
EP0765967A1 (fr) 1995-09-29 1997-04-02 Pecon AG Procédé de fabrication d'un boulon de force transversale et boulon fabriqué par ce procédé
US5852863A (en) 1995-09-29 1998-12-29 Pecon Ag Method of producing a transverse force bolt and transverse force bolt produced by this method
EP0773324A1 (fr) 1995-11-07 1997-05-14 F.J. Aschwanden AG Dispositif pour la connection et la transmission des forces transversales entre deux structures séparées par un joint
US5797231A (en) * 1996-01-16 1998-08-25 Kramer; Donald R. Concrete slab dowel system and method for making same
US5911538A (en) * 1996-06-19 1999-06-15 Pecon Ag Transverse force rod bearing
US6145262A (en) * 1998-11-12 2000-11-14 Expando-Lok, Inc. Dowel bar sleeve system and method

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030190190A1 (en) * 2000-09-29 2003-10-09 Mclean Peter Charles Articulated concrete joint member
US8366344B2 (en) 2000-09-29 2013-02-05 Tripstop Technologies Pty Ltd. Pavement joint
US20050276660A1 (en) * 2000-09-29 2005-12-15 Mclean Peter C Pavement joint
US20110044756A1 (en) * 2000-09-29 2011-02-24 Tripstop Technologies Pty Ltd Pavement joint
US7806624B2 (en) 2000-09-29 2010-10-05 Tripstop Technologies Pty Ltd Pavement joint
US20080236091A1 (en) * 2001-09-13 2008-10-02 Russell Boxall Tapered load plate for transferring loads between cast-in-place slabs
US7481031B2 (en) 2001-09-13 2009-01-27 Russell Boxall Load transfer plate for in situ concrete slabs
US7716890B2 (en) * 2001-09-13 2010-05-18 Russell Boxall Tapered load plate for transferring loads between cast-in-place slabs
US8381470B2 (en) * 2001-09-13 2013-02-26 Russell Boxall Tapered load plate for transferring loads between cast-in-place slabs
US20100242401A1 (en) * 2001-09-13 2010-09-30 Russell Boxall Tapered Load Plate for Transferring Loads Between Cast-In-Place Slabs
US20050232697A1 (en) * 2004-08-05 2005-10-20 Mark Brinkman Dowel apparatus and method
US7632037B2 (en) * 2004-08-05 2009-12-15 Construction Materials, Inc. Dowel apparatus and method
US7201535B2 (en) * 2005-02-10 2007-04-10 Kramer Donald R Concrete slab dowel system and method for making and using same
US20060177269A1 (en) * 2005-02-10 2006-08-10 Kramer Donald R Concrete slab dowel system and method for making and using same
US7736088B2 (en) 2006-07-13 2010-06-15 Russell Boxall Rectangular load plate
US20080014018A1 (en) * 2006-07-13 2008-01-17 Russell Boxall Rectangular Load Plate
US8627626B2 (en) 2010-04-21 2014-01-14 Russell Boxall Transferring loads across joints in concrete slabs
US8840336B2 (en) 2011-11-08 2014-09-23 Fort Miller Co., Inc. Removable dowel connector and system and method of installing and removing the same
US9139962B2 (en) 2011-11-08 2015-09-22 The Fort Miller Co., Inc. Removable dowel connector and system and method of installing and removing the same
US10077551B2 (en) 2015-10-05 2018-09-18 Illinois Tool Works Inc. Joint edge assembly and method for forming joint in offset position
US10385567B2 (en) 2015-10-05 2019-08-20 Illinois Tool Works Inc. Joint edge assembly and method for forming joint in offset position
US10119281B2 (en) 2016-05-09 2018-11-06 Illinois Tool Works Inc. Joint edge assembly and formwork for forming a joint, and method for forming a joint
US20220316210A1 (en) * 2019-08-05 2022-10-06 Hickory Design Pty Ltd Precast building panel
US11136731B2 (en) * 2019-11-14 2021-10-05 David R. Poole Integrated form for embedding a waterstop in a keyed concrete joint
US11149385B1 (en) * 2020-05-20 2021-10-19 McTech Group Inc. Dowel baskets and jackets with interchangeable dowels

Also Published As

Publication number Publication date
EP1032737B1 (fr) 2005-07-20
JP2001523778A (ja) 2001-11-27
DE59812946D1 (de) 2005-08-25
ATE299974T1 (de) 2005-08-15
WO1999025934A1 (fr) 1999-05-27
AU1018999A (en) 1999-06-07
EP1032737A1 (fr) 2000-09-06
CH692991A5 (de) 2003-01-15

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